Скачать или смотреть Graph the Quadratic Function f(x)=x^2-2x-3. (Find Vertex, Axis of Symmetry, x- and y-Intercepts)

The given quadratic function is y=x^2-2x-3. The x-value of the vertex is found using x=-b/(2a) and then this value is substituted into the equation of the function to find the y-value of the vertex. As the coefficient of the x^2 term is positive this parabola opens up and a rough sketch is drawn. This sketch is used to find the domain and range of the function. The y-intercept is found by setting x=0. The x-intercepts are found by setting y=0 and solving the resulting quadratic equation by factoring. The axis of symmetry (the vertical line through the vertex) is found. This information is used to graph the parabola.

Timestamps:
0:00 Introduction
0:30 Find Vertex x=-b/(2a)
2:45 Rough Sketch
3:25 Domain & Range
5:55 Find y-intercept
6:30 Find x-intercepts
8:30 Axis of Symmetry